innisfree Gentle Retinol + Salicylic Acid Acne Serum for Blemishes + Post-Acne Scars vs Kiehl's Since 1851 Better Screen™ UV Serum SPF 50+ Facial Sunscreen with Collagen Peptide
innisfree Gentle Retinol + Salicylic Acid Acne Serum for Blemishes + Post-Acne Scars scores 9.6/9.8 vs Kiehl's Since 1851 Better Screen™ UV Serum SPF 50+ Facial Sunscreen with Collagen Peptide at 6.1/9.8. innisfree Gentle Retinol + Salicylic Acid Acne Serum for Blemishes + Post-Acne Scars wins for active ingredients.
Head to head
Gentle Retinol + Salicylic Acid Acne Serum for Blemishes + Post-Acne Scars
Better Screen™ UV Serum SPF 50+ Facial Sunscreen with Collagen Peptide
Score comparison
innisfree Gentle Retinol + Salicylic Acid Acne Serum for Blemishes + Post-Acne Scars takes this one, winning 2 of 5 attributes.
Scores last verified: July 2026
Attribute battle
Hydration Efficacy
innisfree WINSIrritation Risk
TIEActive Ingredient Strength
innisfree WINSIngredient Transparency
TIEFormulation Safety
TIEIngredient face-off
11% overlapOnly in innisfree Gentle Retinol + Salicylic Acid Acne Serum for Blemishes + Post-Acne Scars
31 unique
Only in Kiehl's Since 1851 Better Screen™ UV Serum SPF 50+ Facial Sunscreen with Collagen Peptide
22 unique
Why innisfree Gentle Retinol + Salicylic Acid Acne Serum for Blemishes + Post-Acne Scars comes out ahead
Where innisfree Gentle Retinol + Salicylic Acid Acne Serum for Blemishes + Post-Acne Scars really shines is active ingredient strength, scoring 6.4 compared to Kiehl's Since 1851 Better Screen™ UV Serum SPF 50+ Facial Sunscreen with Collagen Peptide's 2.6. Its formula features Niacinamide, Allantoin, and Lactobacillus Ferment Lysate in high positions, signalling meaningful concentrations.
Hydration Efficacy is another area of separation. innisfree Gentle Retinol + Salicylic Acid Acne Serum for Blemishes + Post-Acne Scars scores 9.8 here versus 6.2 for Kiehl's Since 1851 Better Screen™ UV Serum SPF 50+ Facial Sunscreen with Collagen Peptide. That difference comes down to how each formula is built — the ingredient list tells the story.
innisfree Gentle Retinol + Salicylic Acid Acne Serum for Blemishes + Post-Acne Scars brings Niacinamide, Allantoin, and Lactobacillus Ferment Lysate as actives, while kiehl's Since 1851 Better Screen™ UV Serum SPF 50+ Facial Sunscreen with Collagen Peptide relies on Tocopherol, Palmitoyl Tripeptide-1, and Palmitoyl Tetrapeptide-7. Both approaches have merit, but the positioning and supporting ingredients make the difference.
Best for your skin type
innisfree Gentle Retinol + Salicylic Acid Acne Serum for Blemishes + Post-Acne Scars is better if you have
- Sensitive skin — the low-irritation formula keeps things gentle
- Dry or dehydrated skin that craves moisture, thanks to Glycerin
- Anyone who prefers clean, well-vetted formulations
Kiehl's Since 1851 Better Screen™ UV Serum SPF 50+ Facial Sunscreen with Collagen Peptide is better if you have
- Sensitive skin — the low-irritation formula keeps things gentle
- Anyone who prefers clean, well-vetted formulations
Value comparison
innisfree Gentle Retinol + Salicylic Acid Acne Serum for Blemishes + Post-Acne Scars comes in at mid-range pricing with a 9.6 score, which is solid value at that tier.
Our verdict
innisfree Gentle Retinol + Salicylic Acid Acne Serum for Blemishes + Post-Acne Scars wins this comparison with a meaningfully stronger ingredient profile and overall score.
Frequently asked questions
Which is better: innisfree Gentle Retinol + Salicylic Acid Acne Serum for Blemishes + Post-Acne Scars or Kiehl's Since 1851 Better Screen™ UV Serum SPF 50+ Facial Sunscreen with Collagen Peptide?
Based on ingredient analysis, innisfree Gentle Retinol + Salicylic Acid Acne Serum for Blemishes + Post-Acne Scars scores higher overall. See the full score breakdown above for details on each attribute.
Do innisfree Gentle Retinol + Salicylic Acid Acne Serum for Blemishes + Post-Acne Scars and Kiehl's Since 1851 Better Screen™ UV Serum SPF 50+ Facial Sunscreen with Collagen Peptide share ingredients?
Yes, they share common ingredients. Check the ingredient face-off section above for a detailed comparison.
What's the main difference between innisfree Gentle Retinol + Salicylic Acid Acne Serum for Blemishes + Post-Acne Scars and Kiehl's Since 1851 Better Screen™ UV Serum SPF 50+ Facial Sunscreen with Collagen Peptide?
The key differences are in their active ingredients and formulation approach. Check the attribute battle above for a detailed breakdown.